The Nut,plain,assembled Washer, cataloged under National Stock Number 5310-01-016-0720, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-016-0720 |
| Item Name | Nut,plain,assembled Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Washer Outside Diameter | 0.375 INCHES NOMINAL IN |
| Width Across Flats | 0.344 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Nut Height | 0.125 INCHES NOMINAL IN |
| Surface Treatment | OXIDE OVERALL |
| Nut Style | EXTERNAL TOOTH |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 1020 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 501-080800-00 | 5/9 Secondary reference Itw Shakeproof Automotive Products |
| 511-081800-00BLKOXD | 5/9 Secondary reference Itw Shakeproof Automotive Products |
| 250257-52 | 5/9 Secondary reference Metadure Parts & Sales, Inc. |
| 511-081800 | 3/9 Design control — primary reference Itw Shakeproof Automotive Products |
NSN 5310-01-016-0720 is a Nut,plain,assembled Washer, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5310-01-072-4716. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-01-016-0720: Overall Height: 0.156 INCHES NOMINAL IN; Washer Outside Diameter: 0.375 INCHES NOMINAL IN; Width Across Flats: 0.344 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL COARSE (UNC). 12 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.